Air pressure pump



Line 27, 1933.

Filed Jan. 23, 1932 Patented June 27, 1933' PATENT OFFICE FRANK M. GABLER, OF MONUMENT, OREGON AIR PRESSURE PUMP Application filed January 22, 1932. Serial no. 588,441.

This invention relates to improvements'in pumps and pertains particularly to a pump designed for inject-ing" air under pressure into a container so that the contents of the'container will be ejected by the compressedair therein. g

The primary object of the present'inven tion is to provide a pump structure by means of which air may be forced under pressureinto a container of a fluid and valve means associated with the pump structure whereby a discharge passage leading from the lower part of the fluid receptacle may be opened so that the contents of the receptacle will be forced out by the compressed air therein.

A further object 'o fthe invention is to provide a pump structure of the abovedescribed character, wherein means is provided for employing the compressed air inthe receptacle for clearing out the pipe line through which the liquid is led from the receptacle, after the" required amount of liquid has been with-' drawn, and the control valve has been closed,"

so thatthe discharge pipe or hose will not be left with-a quantity of liquid therein.

A; still further object of the invention is to provide a pump'structure of simple, strong and durable and compact character and,

therefore, capable oi 'being readily mounted upon asmall container such for example, as

an oil or gasoline drum or the like.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawing forming part ofthis specification, with the understanding, however, that the invention is not confined to any strict con formitywith the showing of the ,drawing but may'be changed or modified so long as such changes or modlficatlons mark no material departure from the salient features of theinvention as expressed in the appended claims.

In the drawing: i

Figure l is a view in side elevation of the -air pressure pumpstructure embodying the present inventionfp'arts thereof being in section; j I

Figure 2 is a longitudinal sectional view through a check valve element" of the .structure. I

pipe 5, to prevent leakage of air pressure .Reterring now more particularly to the drawing wherein like numerals of reference indicate corresponding parts throughout the several views, the numeral 1 designates a portion of a tanker other receptacle, the same. being shown in section and showing a threaded outlet or discharge aperture 2 in the wall thereof through which the draw-ofi' pipe portion of the pump tended.

The air pressure pump structure embodying the present invention comprises a tubular body portion 3 one end of which is enlarged' and interiorly threaded as indicated at 4: to'receive a threaded end of a draw-off pipe 5, which threaded end portion of the draw-oh pipe is designed also for threaded engagement in the opening 2 of the recepta'cle 1 for thQGXtGHSiOH of the draw-off pipe into the receptacle in the manner shown. suitable washer elements or gaskets 6 being interposed between the lower end of the casting 3 and the receptacle and surrounding the structure is exfrom the receptacle. 7 v

The upper end of the casting? is also interiorly threaded as indicated at 7 and there is also carried by this upper end the laterally directed plate 8 which may be cast integral with the casting 8 if desired, in the manner shown. This plate 8 constitutes the lower head of a piston cylinder 9, the upper head for which is indicated by the numeral 10 I and these heads are connected by the tie bolts 11 which draw the heads securely against. 8 suitable washers interposed between them. i and the ends of the cylinder 9. The lower washer is indicated by the nu-; 1neral 12 while the upper one between the head 10 and the cylinder 9 is not shown. Threaded into the threaded upper portion 7 of the casting 3 is one end of a coupling 13, the opposite end of which is interiorly threaded and is normally directed upwardly in themanner shown. while the lateral outlet arm of the coupling is directed away from the cylinder 9 and has apipe line'14 con or other carry-off means thereto. In this pipe line 1.41 there is interposed a hand operated valve 16 of any suitable character, the type preferred being a reciprocabile plug valve operated by a threaded stem 17 which is here shown in section, the usual hand wheel of which has been removed.

Threadably engaged in the upper end of the '1' coupling 13 is a reducing coupling 18, the smaller end of which is threadably engaged in one of the two aligned arms of a smaller T coupling 19, the other of the aligned arms of this coupling being directed upwardly, while the lateral arm thereof is directed in substantially the same direction as the lateral arm of the coupling 13 and is connected through the medium of a valve 20 with the small pipe 21 which leads to and is connected with the pipe line 14 upon the outside of the valve 16, or in other words, upon the s de of the valve 16 remote from the cou pling 13. i

The upper arm of the small T coupling 19 has threadably engaged therein the downwardly opening check valve 22 which as shown in Figure 2, is controlled by a valve hall. 23 which is normally forced upwardly aga nst its seat by the spring 24-. and the upper or nlet end of this check valve has connected therewith the small pipe line 25, the other end of which is connected by means of th coupling 26, with the lower end f the cyl nder 9.

Extending longitudinally through the casting 3 and the larger T coupling 13 is an air pipe 27, one end of which is extended into the reducing coupling 18, while the other,

er d, wh ch extends into the upper end of the draw-off pipe 5, opens through the wall of this pipe to the exterior thereof so as to discharge into the interior of the receptacle 1.

The cylinder 9 has a piston 28 of any suit? able character positioned therein and con.- nected with this piston is the piston rod 29 which extends upwardly and through the upper head plate 10 where it is pivotally conected as indicated at 30 with a lever 31.

The connection of the piston rod 29 with the lever 31 is inwardly ofone end of the lever as shown and this adjacent end has plvotal con n ecti on as at 32 with a rocker arm 33 which is normally vertically disposed and has its lower end pivotally attached as at 34 to a bracket 35 which is rigid with the head plate 10. This bracket as shown, extends downwardly below the top end of the cylinder 9 and there is formed integral with it guide means 36 by which the rocker arm 33 is preven ed from moving sideways.

From the foregoing description it will be readily apparent that when the air pressure pump embodying the present invention is mounted in a liquid receptacle in the manner illustrated and the valves 16 and 20 are closed, the operation of the piston 28 will force air under pressure through the pipe 25 past the check valve 22 and down through the pipe 27 into the receptacle 1. Any desired pressure may thus be built up in the re ceptacle 1 above the liquid therein. After the desired pressure has been established in the receptacle this may be employed for re moving some of thecontents of the receptacle by opening the valve 16 so as to permit the liquid to he forced up through the draw-0H pipe 5 the casting 3 and the T coupling 13 into and through the pipe line 14. After the desired amount of liquid has been removed from the receptacle the valve 16 is closed and the portion of the pipe line 14 lying beyond the valve 16 from the coupling '13 and the hose or other lead-off line which is connected with the pipe line 15 may be part of the receptacle 1 through the pipes 21 i and 27 and into the outer end of the pipe 7 line 1 1.

From the foregoing description it will be readily apparent that with an air pressure 7 pump of the character herein described liquid may be readily drawn off from any receptacle by air pressure means and the air pressure may be kept established by an 0ccasional operation of the piston 28.

Having thus described the invention, what is claimed is y 1. In a pump structure of the character described, a pipe, means for securing the pipe to a receptacle with one end extending thereinto, a coupling at the other end of directed extension, a pipe line connected with said lateral extension and having a control valve therein, an air pump, a pipe line leading from said air pump and passing through said upwardly directed extension and extending longitudinally through a portion of said first pipe and opening through the wall thereof below the means for secur-. ing the same to a receptacle, a check valve in said last mentioned pipe, a pipe establishing an air passage between the pipe line leading from said air pump and the pipe line connected with the lateral extension of said coupling and entering the last mentioned pipe line at a point beyond the valve therein from the coupling, and a valve in said connecting pipe line.

2. A pump device for removing fluid from a receptacle by air pressure, comprising a pipe, means adjacent one end of the pipe for securing the same to a receptacle with the other end extending into the receptacle, a three way coupling having one way con nected with the said one end of said pipe, a pipe line connected with another of the ways of said. coupling and having a control valve therein, a reducing coupling in the third way said pipe having an upwardly and a laterally 1 ways of the air pipe line 1, 9 1 :s',"r2,e A

of said coupling and alignedwith thefirst mentioned pipe, a second three way coupllng having one way connected with the reducing coupling, apipe connected at oneiflen'd with said reducing coupling andv passing longi'- tudinallythrough the upper end of the first pipe'and opening through the-wall ofthelatter at a point below the'saidmeans, an air pump, a check -valve controlled pipe line leading from said air pump into one. of the second three way coupling, an

theways of the second mentioned three way coupling and entering said valve controlled pipe line at a point beyond the valve thereof from the first mentioned three way coupling, and a valve inthe last mentioned air pipe line.

3. Ina pump structure of the character described, a tubular body adapted to have one end extended into a receptacle, means intermediate the ends of the body for securing it to the receptacle, abracket carried by the tubular body adjacent its other end, a pump structure mounted upon said bracket, a pipe connected at one end'with the tubular body at the said other end, valve means controlling said pipe, a pipe connected at one end with said pump and having its other end extended into the tubular body through the said other" end of-the latter and opening through the wall'of the tubularbody at a point between the first mentioned end thereof and the means for coupling the same withleading from the third one of said mentionedpipe hav the receptacle,

and a valved pipe ing a: check valve therein,

connected with thesaid last mention-ed pipe between the check valve and the .end thereof 7 termediatethe ends of the body for securing 1 it to the receptacle',a pump, a pipe connected at one end with the tubular body at the said (other end,val ve means controlling said pipe,

a pipe connected at one'end with said pump.

.and having its other end extended into the tubular body through the said other end of the latter'and opening through the wall of the tubular-body at a point between the first mentioned end thereof and the 'm'eans for coupling the same withthe receptacle,said last mentioned pipe having a check valve therein, and a valved pipe connected with the i said lastmentioned pipe between the check- Valve and the end thereof opening through the wall of the tubular body andhaving its other end entering the firstmentioned valved I Q pipe at a point between thevalve and the out-' letend thereof.

In testimony Whereof'I hereunto .affiir my Y signature.

FRANK M. GABLER. 

